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Segment Assets (Detail) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2014 | Dec. 31, 2013 | Mar. 31, 2013
--- | --- | --- | ---
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |
Accounts receivable and inventories, net | $ 1,413,389 | $ 1,828,948 | $ 1,350,694
Operating Segments |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |
Accounts receivable and inventories, net | 1,308,595 | 1,745,094 | 1,253,354
Operating Segments | North America |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |
Accounts receivable and inventories, net | 463,905 | 723,886 | 475,702
Operating Segments | International |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |
Accounts receivable and inventories, net | 734,024 | 920,770 | 683,083
Operating Segments | American Girl |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |
Accounts receivable and inventories, net | 110,666 | 100,438 | 94,569
Corporate and Other |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |
Accounts receivable and inventories, net | $ 104,794 | $ 83,854 | $ 97,340

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- Definition Amount of total accounts receivable and inventories, net. + References No definition available. + Details
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Namespace Prefix: | mat_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration